Mushroom Grow Bags (5-7 lbs.) with .2 micron filter and a built-in self-healing injection port (3T Unicorn Brand Bags)

These 3 millimeter polypropylene grow bags with 0.2 micron filters and self-healing injection ports are suitable for growing mushrooms at home, accommodating spawn and fruiting blocks up to 7 pounds each.

• The description claims that these bags work great for producing spawn and fruiting blocks weighing 5-7 lb per bag/block.